Table 2.
Coverage probabilities of four confidence interval methods for overall and decomposed mediation effects in a dichotomous outcome model with two mediators (one binary (M1) and one continuous (M2)), n = 100 per group.
ρ(M1, M2) | True IE | True IE1 | True IE2 | Overall IE
|
IE1
|
IE2
|
|||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jack knife | Boot | Bc | Bt | Jack knife | Boot | Bc | Bt | Jack knife | Boot | Bc | Bt | ||||
|
|
|
|||||||||||||
−0.5 | 0.000 | 0.050 | −0.050 | 93.2 | 94.6 | 94.5 | 93.8 | 95.5 | 94.4 | 92.9 | 94.3 | 92.8 | 93.4 | 92.7 | 82.1 |
0.200 | 0.300 | −0.100 | 83.8 | 97.3 | 83.1 | 90.4 | 81.5 | 97.7 | 84.4 | 87.5 | 95.2 | 94.9 | 94.3 | 99.9 | |
0.000 | 0.000 | 0.000 | 95.2 | 94.7 | 93.7 | 93.5 | 99.7 | 98.0 | 95.1 | 90.8 | 97.0 | 93.1 | 90.6 | 68.0 | |
0.051 | 0.000 | 0.051 | 96.3 | 94.8 | 94.7 | 94.9 | 99.5 | 97.3 | 94.6 | 92.0 | 94.9 | 94.3 | 94.9 | 64.2 | |
0.050 | 0.050 | 0.000 | 94.2 | 95.1 | 94.9 | 94.5 | 96.0 | 95.3 | 94.6 | 94.4 | 96.8 | 95.6 | 93.0 | 99.2 | |
0.100 | 0.050 | 0.050 | 93.6 | 94.7 | 95.1 | 93.2 | 95.4 | 95.0 | 93.4 | 94.3 | 95.0 | 94.9 | 94.0 | 81.8 | |
0 | 0.000 | 0.050 | −0.050 | 94.1 | 94.1 | 93.5 | 93.6 | 96.2 | 94.7 | 93.6 | 93.8 | 94.8 | 94.9 | 94.1 | 85.0 |
0.200 | 0.300 | −0.100 | 91.4 | 94.8 | 89.7 | 91.9 | 91.5 | 94.5 | 89.0 | 91.6 | 94.4 | 94.0 | 94.6 | 99.9 | |
0.000 | 0.000 | 0.000 | 94.7 | 95.2 | 93.1 | 95.0 | 99.7 | 97.9 | 95.2 | 92.3 | 95.8 | 93.7 | 91.1 | 67.5 | |
0.051 | 0.000 | 0.051 | 95.2 | 94.8 | 94.1 | 94.9 | 99.7 | 97.4 | 95.4 | 93.0 | 94.0 | 94.2 | 94.1 | 61.7 | |
0.050 | 0.050 | 0.000 | 96.8 | 96.2 | 95.6 | 94.8 | 96.8 | 96.5 | 95.5 | 95.3 | 96.8 | 94.5 | 92.9 | 98.7 | |
0.100 | 0.050 | 0.050 | 96.1 | 94.4 | 94.3 | 93.9 | 95.3 | 94.1 | 92.6 | 93.9 | 95.8 | 95.3 | 95.1 | 83.9 | |
0.5 | 0.000 | 0.050 | −0.050 | 95.2 | 94.6 | 94.6 | 93.9 | 95.8 | 94.4 | 93.7 | 95.0 | 93.2 | 94.2 | 93.9 | 85.8 |
0.200 | 0.300 | −0.100 | 92.6 | 95.0 | 94.0 | 93.5 | 92.8 | 94.8 | 93.6 | 93.3 | 94.2 | 93.5 | 94.5 | 100 | |
0.000 | 0.000 | 0.000 | 96.7 | 95.2 | 93.0 | 94.3 | 99.1 | 97.8 | 94.7 | 91.2 | 96.0 | 94.1 | 91.0 | 67.5 | |
0.051 | 0.000 | 0.051 | 95.5 | 94.7 | 94.5 | 93.9 | 99.4 | 97.9 | 95.3 | 92.4 | 94.9 | 93.1 | 93.1 | 62.5 | |
0.050 | 0.050 | 0.000 | 94.3 | 95.9 | 95.0 | 94.8 | 95.4 | 92.8 | 92.2 | 93.5 | 95.6 | 94.7 | 92.7 | 99.3 | |
0.100 | 0.050 | 0.050 | 96.2 | 94.4 | 94.1 | 93.6 | 95.5 | 93.9 | 93.0 | 94.7 | 95.2 | 94.0 | 93.4 | 84.2 | |
0.9 | 0.000 | 0.050 | −0.050 | 95.9 | 95.1 | 94.2 | 94.5 | 94.8 | 94.7 | 93.4 | 93.5 | 94.7 | 94.7 | 94.4 | 86.5 |
0.200 | 0.300 | −0.100 | 95.4 | 93.4 | 93.7 | 94.0 | 94.5 | 93.1 | 93.0 | 93.1 | 95.8 | 93.4 | 94.2 | 100 | |
0.000 | 0.000 | 0.000 | 96.4 | 95.3 | 94.5 | 93.9 | 99.2 | 97.6 | 94.4 | 93.6 | 97.1 | 94.7 | 93.0 | 69.2 | |
0.051 | 0.000 | 0.051 | 95.8 | 95.3 | 95.0 | 94.6 | 98.8 | 97.6 | 94.1 | 91.4 | 94.7 | 94.7 | 94.1 | 66.3 | |
0.050 | 0.050 | 0.000 | 95.6 | 95.2 | 94.8 | 95.0 | 95.1 | 94.8 | 94.3 | 95.3 | 96.7 | 94.6 | 93.8 | 99.1 | |
0.100 | 0.050 | 0.050 | 94.6 | 95.1 | 94.8 | 95.4 | 93.5 | 95.2 | 94.3 | 94.1 | 93.7 | 94.8 | 94.6 | 83.4 |
Jackknife: jackknife CIs; Boot: bootstrap percentile CIs; Bc: bias-corrected bootstrap CIs; Bt: bootstrap-t CIs.